[INFO] fetching crate shell2batch 0.4.2...
[INFO] documenting shell2batch-0.4.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate shell2batch 0.4.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate shell2batch 0.4.2 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shell2batch 0.4.2
[INFO] finished tweaking crates.io crate shell2batch 0.4.2
[INFO] tweaked toml for crates.io crate shell2batch 0.4.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate shell2batch 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9aadbb1778e4658b3b0f22d0901a386ac54a76d2732dee7ecca841e302fad6e5
[INFO] running `Command { std: "docker" "start" "-a" "9aadbb1778e4658b3b0f22d0901a386ac54a76d2732dee7ecca841e302fad6e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aadbb1778e4658b3b0f22d0901a386ac54a76d2732dee7ecca841e302fad6e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aadbb1778e4658b3b0f22d0901a386ac54a76d2732dee7ecca841e302fad6e5", kill_on_drop: false }`
[INFO] [stdout] 9aadbb1778e4658b3b0f22d0901a386ac54a76d2732dee7ecca841e302fad6e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad85ae40c39fa124443f5a3030ef4707c006ffecacb2cb687afb29e567ca16b2
[INFO] running `Command { std: "docker" "start" "-a" "ad85ae40c39fa124443f5a3030ef4707c006ffecacb2cb687afb29e567ca16b2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting shell2batch v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/converter.rs:108:61
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn add_arguments(arguments: &str, additional_arguments: Vec<(String)>, pre: bool) -> String {
[INFO] [stdout]     |                                                             ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:80:5
[INFO] [stdout]     |
[INFO] [stdout] 80  |     unused_parens,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "ad85ae40c39fa124443f5a3030ef4707c006ffecacb2cb687afb29e567ca16b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad85ae40c39fa124443f5a3030ef4707c006ffecacb2cb687afb29e567ca16b2", kill_on_drop: false }`
[INFO] [stdout] ad85ae40c39fa124443f5a3030ef4707c006ffecacb2cb687afb29e567ca16b2